As long as you accept that things like walking into a restaurant bathroom and taking a roll or two of toilet paper or going to a bank to take one of the pens don't constitute theft under even the most strained comparison. Using an ad-supported site with an adblocker is imposing costs on a service provider by abusing a service provided under certain assumptions that you're knowingly and deliberately violating.
heck yes i would
you're right about the second part i guess. not everything is intended for a public audience (like some cringe video clip with friends from a few years ago). with everything else (cinema, music etc.) i'd argue that my need for entertainment is more important than making sure some billionaires make 20 bucks on my purchase, especially if i can't afford it.
personally, i pirate everything and pay for stuff made by independent creators (foss devs, indie artists etc.) that i really like. perfectly moral
https://www.theverge.com/2024/5/2/24147007/google-paid-apple...